KR20060121984A - Clip-on or snap-on fixing for fastening a thin wall to a wall support - Google Patents

Abstract

The invention relates to a snap-on fixing (10) for fastening a thin wall (14), such as a housing wall, door leaf, flap or the like, which is provided with a passage (13) on a wall support (16), such as a housing frame, door frame, wall opening edge or the like, which is also provided with a passage. Said snap-on fixing comprises a base part (18) that can be fastened in the passage (12) of the wall support (16). A head part (20) extends away from said base part (18) and has, across its longitudinal section, a cross-section (49) that first increases and then decreases from the end of the head part (20) towards the base part (18). The head part (20) represents a male push-in part that is received, while overcoming a spring force (28) that is effective radially outwards in the direction of the diameter (49), by an undercut female push-in part (13), configured or carried by the passage (13) of the thin wall (14). The inventive snap-on fixing is characterized in that the head part (20) represents a guide or channel for one or more pushing or retaining elements (22, 23) that are pushed by at least one spring (28) into a position that projects beyond the end of the guide or channel. The ends (51, 53) of these elements projecting from the guide or channel have a triangular or spherical shape in a plane of projection perpendicular to the thin wall (14).

Description

Clip-on or snap fastening for securing thin walls to wall supports {CLIP-ON OR SNAP-ON FIXING FOR FASTENING A THIN WALL TO A WALL SUPPORT}

The present invention provides a snap fastening device for fixing a thin wall such as a housing wall, a door leaf, a shutter, etc., which is also provided with an opening, to a wall support such as a housing frame, a door frame, a wall opening edge, etc., provided with an opening. The wall support has a base member that can be disposed on the wall support at the opening, wherein the wall support extends away from the base member and once increased and then again decreases in longitudinal section from the end of the head member in the direction of the base member. A head member having a diameter to be received by the undercut female plug insert member formed or maintained by a thin wall opening by overcoming a spring force acting radially outward in the radial direction. And a snap fastening device that can be a male plug insertable member.

Snap fastening devices are already known in a pamphlet published by Boellhoff GmbH, 33649 Bielefeld Archimedesstrasse 1-4, Germany. Pins that can be fastened to the wall support by threaded base members have spherical or balloon head members that constitute a male plug-in part, while the collared cap is a female plug. It acts as a female plug-in part, can be inserted into a thin wall opening, and can accommodate the head member with flexibility due to the structural material making up the flexible plastic.

Plastic materials have the disadvantage that they can lose their original properties and elasticity over time and by repeated stresses, and the strength of the holder is not guaranteed. In addition, the structure is very complex and expensive.

The object of the present invention is to overcome the above disadvantages, to ensure excellent elasticity over an infinite time, and to be designed to be cheaply manufactured and simply assembled due to the simplicity, for example, metal sheet cabinet (cabinet) and It is to provide a snap fastening device of the type described above that makes it possible to inexpensively produce all types of cases, covers, and end closures.

The head member is a guiding device or channel for at least one pressing element or holding element pressed by at least one spring to a point that projects beyond the end of the guiding device or channel, and the The ends take the shape of triangles or balls in the plane of projection perpendicular to the thin wall (claim 1).

By means of the above, steel springs having a spring characteristic that does not change with time can be used, in contrast to the prior art in which spring forces must be provided by flexible materials that change with time.

While elasticity in plastics is limited by the material properties of the plastic, it is another advantage that the spring force can be made as high as possible by using a spring device with a corresponding high spring constant.

In the prior art, the female plug-in member must be disposed around the opening of the thin wall, and in the form of the embodiment according to the invention, the female plug can be narrower in width to provide a smaller opening without compromising strength. The connecting member is preferably formed by a triangular opening in the inclined region at the thin wall, preferably at the edge of the thin wall (claim 2).

In a particularly advantageous embodiment according to the invention, the pressing elements comprise two plates next to each other so as to be movable, each of which extends in the direction of movement, individually or in combination with a helical pressure spring. An opening defining a receiving space for the opening, the opening at the second end being arranged to move away from the ball-shaped or triangular free end in such a way as to force the shared spring to drop the two plates in the direction of travel ( Claims 3 and 4).

According to another configuration of the invention, the edge of the opening has a projection or recess for securing the spiral pressure spring and the plate (claim 5).

The helical pressure spring can thus be pre-fitted to the plate to facilitate continuous assembly in the male plugged member.

According to another configuration of the invention, the pressing spring and the edges of the opening are shaped in such a way as to receive two plates against each other to form a processing unit into which the pressing spring can be preassembled (also claim 5 term).

This may also contribute to simplifying processing prior to and during assembly.

According to a further embodiment of the invention, the plate has a notch at the outer longitudinal edge such that the longitudinal movement is limited by the protrusion or by the pin engaging at the notch (claim 6). In a particularly advantageous manner according to the invention, the two plates are guided so as to be able to move longitudinally in the U-shaped housing, in which the leg ends are formed by the base member or fastened to the base plate formed integrally with the base member (claim 7). term).

The U-shaped housing may have an opening in the web region to accommodate the pin, which has already served to limit the longitudinal movement of the plate (claim 8).

The base member is formed by a screw bolt which fastens the nut to the bolt, thereby causing the base member to be fastened to a wall support such as a housing frame, a wall opening edge, or the like (claim 9). This corresponds to the form of the fastening device of the pin in the prior art.

Alternatively, the base member may be further formed by a fastening plate provided with a fastening hole so that the base member can be tightened by a corresponding screw which can be inserted through the fastening hole (claim 10).

The base member may be further formed by a plate overlapping the longitudinal edge of the opening in the thin wall (claim 11).

The base member may be additionally pressed on one side of a pressed metal profile, such as an aluminum profile, or a wound metal sheet profile, such as a sheet steel profile, or an injection molded plastic profile (claims 12, 13, and 14). term).

In a particularly advantageous manner, the base member is formed similarly to the head member in mirror image arrangement (claim 15). In the embodiment of this kind, there is an advantage when both members have a shared base plate placed between both members (claim 16).

However, the base plate of the head member may be further formed or held by the web of the base member (claim 17).

In such a case, it is advantageous when the base member has a longitudinally extending member larger than the head member, and forms a support shoulder against the thin wall with the web (claim 18). This provides a stop perpendicular to the plane of the thin wall that does not need to be formed by a wall support or other structural element member of the housing.

Insert into the appropriate opening of a thin wall or wall support by inserting a plate that is movable in the longitudinal direction when the free end of the movable plate of the base member guides the roof member with flatter inclination. However, when the plate is self-locking on the guide device and it is impossible to guide the inclined member of the roof, it takes a symmetrical roof shape so that it can move backwards (claim 19).

Devices of this type cannot be unwound again without special tools, which is advantageous in many cases.

When a self-locking snap fastener is used, a tool such as a wrench or key that can pull back the pressing element against spring force by rotating a tool such as a wrench or key will automatically snap to the front and / or back It is advantageous when it can be inserted into a housing comprising a fastening device.

This makes it possible to disassemble this kind of fastening device as needed.

According to another embodiment of the present invention, the housing may be provided with a fastening cam which can be fixed in the through hole of the thin wall.

An actuating shaft or actuating wheel or key capable of pulling back the pressing element of the housing may protrude from the housing.

If the actuation wheels are designed in such a way that they can be locked in the open position, it is easy to operate the snap fastening device provided with a plurality of actuation wheels.

The handle device may further protrude from the housing. This is more advantageous, for example, if the housing is a drawer or a push-in rack.

The housing may include snap fasteners that are not self-locking as well as snap fasteners that are self-locking. The two forms of snap fastening devices are arranged at the same height so that they can be biased with respect to each other with respect to the distance from the plane of the thin wall.

 The base member may have a long hole as a fastening hole which is advantageous in the case of serving as a bracket which is screwed to allow the device to move.

The invention also relates to a drawer or rack with a thin wall front section, wherein the front plate is a thin wall and the drawer receptacle is the wall support according to one of claims 1 to 9.

The invention also relates to a cabinet with a thin wall or door leaf in which the snap fastening device is constructed according to one of the embodiments described above (claim 28).

The thin wall may have one or more handles or handles with recesses to make the thin wall easier to handle (claim 29). In such a case, the snap fastening device is advantageous when the handle recess is arranged in an opening which engages similarly to the recess of the base member shown in the embodiment embodiment as described above.

The double-bevel makes it possible to arrange the fastening device so that the fastening device is not visible. Alternatively, a thin wall with a web having an opening for receiving the symmetrical roofed end of the snap fastening device described in one of the preceding embodiments may be provided (claim 30).

1A shows a switch cabinet door segmented in a switch cabinet frame and held in a closed position by a snap fastener configured in accordance with the present invention.

1b shows a top cross section of an opening provided in a door leaf and a door frame for a snap fastening device constructed in accordance with the present invention;

FIG. 2 is a side view of the snap fastening device used in FIG. 1A that acts as a door closer and can be fastened to the door frame by a base member in the form of a similarly configured snap fastener.

FIG. 3A is a perspective view of a snap fastening device having a base member formed by a fastening plate provided with fastening bore holes. FIG.

3B is a side view of a snap fastening device having a base member formed by a fastening plate provided with fastening holes.

4 shows an embodiment form in which the base member is formed by a screw bolt.

5A is a perspective view of a double U-shaped housing for two plates arranged to be movable relative to one another;

5B is a front view of a dual U-shaped housing for two plates arranged to be movable relative to one another;

FIG. 5C shows an axial cross section along section B-B in FIG. 5B. FIG.

Figure 5d shows a plan view of the housing according to figure 5a;

6 shows a plate with openings and side edge cutouts for realizing a snap fastening device in a door frame;

7A is a side view of a mounting plate having a symmetrical triangular end and provided with openings and side edge notches.

7b is a plan view of a mounting plate with symmetrical triangular ends and provided with openings and side edge notches.

8 is a plan view of a mounting plate having a symmetrical triangular end and provided with openings and side edge notches, one triangular side of the end being concave;

9 is a plan view of a mounting plate with the end in the form of a ball and with convex triangular sides.

10A is a sectional view similar to the sectional view in FIG. 1A through a cabinet wall in which a snap fastening device constructed in accordance with the present invention is provided;

FIG. 10B is a sectional view along cut line A-A of FIG. 10A;

10C is a plan view of the embodiment according to FIG. 10A.

10d shows a perspective view of the device according to FIG. 10a.

11a shows a side frame with sidewalls of a cabinet provided with a snap fastening device and a recessed handle device according to the invention;

FIG. 11B is an enlarged cross sectional view along line E-E in FIG. 11A;

FIG. 11C is an enlarged cross sectional view along cut line D-D of FIG. 11A;

11d shows a perspective view of the frame according to FIG. 11a with a snap fastening device constructed in accordance with the invention in accordance with FIGS. 11b and 11c.

12 is a cross sectional view through a frame of a cabinet provided with a door leaf and a snap fastener;

13a and 13b are cross-sectional views along the line FF of FIG. 13a of the cabinet according to FIG. 12 for illustrating a holder welded to the rear face of the door leaf and having an opening for receiving an end of the pressing plate of the snap fastening device; Floor plan.

14A-14D illustrate embodiments of a press plate having a structure for forming a treatable device that includes a plate and a spring.

15A is a cross-sectional view of the snap element in which the base member is formed by the plate 218.

15B is a side view of the snap element in which the base member is formed by the plate 218.

16A is a cross-sectional view of the snap element in which the base member is formed by the plate 218.

16B is a side view of the snap element in which the base member is formed by the plate 218.

FIG. 16c shows a housing according to FIG. 16a, or a housing with a tool for crimping on an inwardly projecting protrusion for securing a plate; FIG.

FIG. 17A is a cross sectional view similar to the snap fastening device of FIG. 2 but through the form of a snap fastening device using a thin metal plate; FIG.

FIG. 17B shows an apparatus similar to the apparatus of FIG. 1A but reproduced using a thin sheet of metal. FIG.

FIG. 17C shows the combined housing of the clipped connection member. FIG.

FIG. 17D is a cross sectional view through a plate that may be introduced into the housing according to FIG. 17A; FIG.

FIG. 18 shows a housing form similar to FIG. 17C but with a protruding guide to the plate; FIG.

19A is a side view of a housing made by injection molding.

19B shows from the side of the housing made by injection molding.

19C is a top view of the bonded plate.

19D is a side view of the plate combined;

FIG. 20 is a view similar to FIG. 18 but showing a housing manufactured by injection molding. FIG.

21a and 21b show an embodiment form according to FIGS. 15a and 15b with a special stable holder coupled with screws.

FIG. 21C shows a rear view of the form of the embodiment according to FIG. 21 showing two pairs of plates provided.

FIG. 22A is similar to FIG. 21A, but showing that the plates are placed next to each other rather than next to each other.

FIG. 22B is a side view of a form of the embodiment according to FIG. 22A;

22c shows a plan view of the form of the embodiment according to FIG. 22a;

23A, 23B, 23C, and 23D show a coupled collapsed plate with springs.

24A, 24B, and 24C show three views of alternative, particularly stable, snap elements.

25A, 25B, and 25C show various views of a snap element that can be locked by a stopper or a plug and can be released by a key;

27A-27E show several views of the combined pressing plate.

28A, 28B, 28C and 28D show a form of embodiment with a fixed spring.

29A-29C show a spring with an associated plate combined;

30A and 30B show another embodiment.

FIG. 31 shows a combined housing; FIG.

32A and 32B show the joined plate.

33A and 33B show another embodiment embodiment.

34A-34D illustrate an embodiment form similar to that in FIG. 20 that can be unlocked by a key.

35 illustrates openings joined in a thin plate.

36 shows an example of an application that can be opened from the outside.

37 shows a corresponding application that can be opened from behind;

38A and 38B show wall supports using openings for thin walls and the housing described in FIGS. 41A and 41B.

39A and 39B show corresponding openings for the embodiment embodiment described in FIGS. 40A-40C.

40A-40D show a housing that can be locked by a clip protrusion in a wall support formed by the housing wall.

41A and 41B show another corresponding form;

42 is an axial sectional view through the housing according to FIGS. 40A-40D.

43A-43D illustrate another embodiment incorporating a handle.

44 is a cross sectional view of an application example with an embodiment form that can be locked to a wheel;

45A-45C illustrate embodiments in which the self-locking fastening device and the non-self-locking fastening device have handles disposed in separate housings.

FIG. 46 shows an embodiment form in a view similar to FIG. 45 with the self-locking fastening device and the non-self-locking fastening device disposed in several planes within the same housing.

FIG. 47 shows a combined opening shape for the embodiment form according to FIGS. 45A-45C.

48A shows a front view of a suitable self-locking plate for the embodiment form according to FIGS. 45A and 45B.

48B is a side view of a suitable self-locking plate for the embodiment form according to FIGS. 45A and 45B.

49A, 49B, and 49C show another alternative to the self-locking plate.

50A and 50B show a snap fastening device constructed in accordance with the present invention that can be used as a bracket.

51A and 51B illustrate a longitudinal cross section and cross section through the form of the present invention configured as two thin wall connectors;

52A and 52 are side and plan views of the connector according to FIG. 51A;

FIG. 53 is similar to FIG. 51B but showing that the walls are not yet connected;

54 is a side view of the snap fastener with a retaining element that can pivot about an axis extending parallel to the plane of the thin wall.

55A, 55B, and 55C are side views of a snap fastener with a retaining element that can pivot about an axis extending perpendicular to a thin wall.

FIG. 56 is an exploded view of a snap fastening device similar to that shown in FIGS. 40A-40C but with an insert spring instead of a fastening cam;

57A-57F show various views of the snap fastening device shown in FIG. 56 in a closed position.

58A-58E show various views of the snap fastening device shown in FIG. 56 in an open position.

FIG. 59 is a perspective view of the snap fastener shown in FIG. 56 before being mounted to the wall support and before the thin wall is mounted to the wall support by the snap fastener. FIG.

60A is a perspective view of the snap fastener shown in FIG. 56 after being mounted to the wall support and before the thin wall is mounted to the wall support by the snap fastener.

60B-60D show another view of the state shown in FIG. 60A.

61a shows a perspective view of the snap fastening device according to FIG. 56 after being mounted to the wall support and after the thin wall is mounted to the wall support by the snap fastening device.

61B-61D are other views of the state shown in FIG. 61A.

Reference list

10, 110, 210, 310-2010: snap fastener, connecting member

11: hinge

12, 112, 1112, 1212, 1712, 2012: opening of the wall support

13, 113, 1213, 1313, 1713, 2013: opening in thin wall, female plug insert

14, 114, 714, 914, 1314, 1514, 1714, 2014: thin wall

15, 115: knob, handle, recessed handle

16, 816, 1116, 1216, 1316, 1716, 1816, 2016: wall supports

17, 817: web, thin wall

18, 118, 218, 318, 418, 618, 1618, 1718, 2018: flange, leaning member, bottom plate, fastening plate

119, 219, 319: bolts, perforations, missing members

20, 320, 720, 1020, 1720, 2020: head member, male plug insert member

21: opening

22, 122, 322, 422, 622, 722, 822, 922, 1022, 1122, 1322, 1522, 1722, 1722 ', 1822, 2022: retaining element, pressing element, plate

23, 123, 223, 323, 423, 1523: push element, hold element

24, 424, 1724, 1724 ': Roof shape, steep inclined member

25, 25 ': triangular side, slope

26: roof shape, flat member

27, 27 ': triangular side, slope

28, 728, 828, 928, 1028, 1728, 2028: spring elements

29, 2029: tool

30: axis

331: reversal

32: opening

33: guide device, channel

34, 1134: guide device, channel

35, 935, 1335, 1735: housing

36: edge of opening

37, 2037: tightening cam, spring member, spring element

38: end face, stop face

39: end face, stop face

40: screw

41: shoulder part

42, 342, 442, 542: shoulder portion, protrusion, pin

43, 2043: rotary knob, key

44: headless screw

45: handle device

46, 146: opening

47: opening

48: bottom

49: diameter of head member, direction of movement

50: pocket hole

51: protruding end of the pressing element

52: edge

53: protruding end of the retaining element

54, 1054: slot space

56: edge

57: support shoulder part

58: cancer

59: notch

360: stop face

61: web

62: side

64: recess

66, 1766: plug, shoulder, protrusion, pin

67: housing slot

68: key

69: stop face

70: slope

71: stop face

72: channel wall

73: flange

74, 1274: hole

75: color indicator

76: channel cover

77: color display

78: recess zone

79, 1779: notch, recess

80: side

81: cotton

82: end face

83: cover

84, 1084: accommodation space

85: notch

86, 186: humps, protrusions

88: straight edge

90: test operation slope

A: distance

B: part

The present invention will be more fully described below with reference to the embodiments shown in the drawings.

1A shows a thin wall 14 such as a housing wall, in this case a door leaf 14 with an opening 12, a shutter, or the like, such as a housing frame, a door frame, a wall opening edge, etc. Is a cross-sectional view showing a snap fastening device 10 for securing to a wall support 16, the wall support having a base member 18 that can be disposed in the wall support 16 in the opening 12, The wall support extends away from the base member 18 and has a diameter that once increased in the longitudinal section shown in side view in FIG. 2 and then again decreased from the end of the head member 20 towards the base member 18. Member 20, which head member 20 overcomes a spring force (see spring 28 of FIG. 3B) that acts radially in the longitudinal direction, thereby opening 13 of thin wall 14; Formed or maintained by It becomes a member upon male plug insertion that can be accommodated by an undercut plug insert member. The head member 20 of the snap fastening device 10 is a guide device or channel for one or two pressing elements 23 pressed by at least one spring 28 to a point that projects beyond the end of the guide channel. 33, 34). The protruding ends from the guiding device or channels 33 and 34 take the form of triangles (see FIG. 2 top and 7b), ie the protruding ends are inclined faces or triangular sides 25 as shown in FIG. 7b. , 27). The two pressing elements 23, which are identically configured in this way, are located in opposite directions and are arranged next to each other within the channels 33, 34 so as to be able to move opposite to each other with respect to the four channel walls. This forward and backward movement of the pressing element 23 becomes part of the stopper or plug 66 and the shoulder portion 42 disposed through the corresponding opening 32 (see FIG. 5D) in the narrow wall of the head member 20. Limited by). The shoulder portion projects into the recess 79 of the pressing element 23 and abuts the end faces 38, 39 of the recess. Thus, while the plug 66 is located at the point shown in FIG. 3B, the two pressing elements 23, 123 located in the opposite direction cannot fall out of the housing guide device, on the other hand, the two pressing elements Is pressed by the spring 28 to the point shown in FIG. 3B where it projects beyond the guide channel by the triangle end. The inclined faces 25, 27 thus form a diameter extension of the head member which initially increases and then decreases again. This snap element 10 can thus be pressed into the opening 12 formed by the door leaf 14. The inclined face 27 slides along the narrow edge of the opening, thereby pressing the pressing element 23 back into the guide channel against the force of the spring 28 until the end of the triangle is reached. 23 moves back down, the edge of the opening slides along the inclined surface 25, causing the snap element to move out of the opening again. When the inclination of the inclined surface 25 is equal to the inclination of the inclined surface 27, the inclined surface 25 allows outward movement, but the inclined surface 25 is necessary to unlock the snap element again. It can be modified in that it takes a concave shape as indicated by reference numeral 25 'or a convex shape as indicated by reference numeral 27' to change the consumption of force.

As shown in FIG. 1A, the opening 12 of the snap fastener is positioned on the inclined surface of the door leaf 14 such that the fastener is not visible when the door is closed. Instead of the opening of the housing 16 that is closed by the door with the hinge 11 and the door handle 15, the opening of the housing 16 replaces the hinge 11 and snaps similar to that shown to the left of 10. The expression fastening device may be further closed by a wall member that can be disposed above the openings 112, 113. The wall 114 may have a second handle 115 to facilitate operation, although the handle may be omitted.

In general, the inclined surface of the frame 16 shown to the left of FIG. 1A can be a wall opening that must be closed by the corresponding closure member.

The fastening of the snap element 10 in the door frame 16 or the like may be a screw bolt (see bolt arrangement 219 disposed on base plate 218 of FIG. 4) or base plate 118 according to FIGS. 3A and 3B. Can be performed in a conventional manner by screws (not shown), which are arranged to pass through the perforations 119. A more preferred design, configured on top of the snap fastening device and similar to that shown in FIG. 1, is to configure the base member to be dried substantially the same as the head member 21.

The practical difference is that the inclined surfaces 26, 24 take different inclinations (see FIG. 6). The inclined surface 26 makes it easy to insert the base member into the corresponding openings 12 and 112 in the frame or the like by providing a relatively small inclination that does not exhibit the automatic locking effect. In contrast, the inclination 24, which must be overcome in order to pull the structural element out of the opening again, is so steep that there is an automatic locking effect, and the structural element member cannot be removed from the opening without a special tool.

Particularly advantageous applications of the spring force are illustrated in FIGS. 14A-14D. The two pressing elements are located next to each other so as to be movable (see FIG. 14B), each comprising two plates 122 having openings 146 elongated in the direction of movement. These two openings next to each other together form a receiving space for the helical pressure spring 128. The opening 146 is arranged such that the spring can be moved away from the free or triangular free end in such a way as to force the two plates to separate in the direction of movement, ie right and left in FIG. 14B.

The other edge of the opening 146 may be processed to secure the spring in the receiving space, or two adjacent movable plates 122, as illustrated in FIGS. 14C and 14D (different plate thicknesses). It may be provided with a protrusion 186 to be held together at the same time as the device.

If such a mounting device is not required or if the device is already supported, the protrusion 186 may be omitted. In any case, after mounting in the channel, the spring and the plate are held automatically relative to each other, ie by the wall of the channel.

Therefore, the snap fastening device can be fastened in the frame 16 by a clip process, and a thin wall such as door 14 can slide above the snap fastening device, so that the door is locked but can be opened by applying a corresponding attraction force. The drying of the snap fastening device according to FIG. 2 as far as possible is particularly advantageous. This is not possible with the snap fastening device of the base 19. A tool must be used to dismantle the snap fastener of the base, or the two pressing elements 22 against the force of the combined spring until the edge of the combined opening 12 moves away along the slope 24 of the steep slope. ) A wide range of force must be applied by the finger to press into the housing.

In the embodiment according to FIG. 1A, the inclined surface of the thin wall 14 lies directly after the inclined surface of the frame, and only the thickness of the plate separates the inclined surfaces from each other. In the embodiment form according to FIG. 11B, the arrangement is selected in such a way that sometimes an advantageous distance is increased. The base member is rotated for this purpose.

10A, 10B, 10C and 10D show embodiments in which the thin wall 14 is detachably fixed to the door frame 16 using the dual snap fastening devices 19, 20 according to the invention. There are several drawings.

In the case of a switch cabinet with a door frame 116 and a door leaf 114 according to FIGS. 12, 13A and 13B, when the door leaf does not have an inclined surface on which a suitable receiving opening can be arranged for snapping. In this regard, the door leaf 114 has a web 17 emerging from the free end of the door leaf and is positioned opposite each other and has an opening 21 through which the pressing element 123 moves and enters.

In Figures 15A and 15B, the two thin walls are connected to each other by the base member according to the invention. The two thin walls 14, 16 are maintained by automatically locking the pressing element 323 in such a way that the two thin walls can only be detached from each other by the tool. The same form is made in FIG. 16B via metal sheet winding, while the connected housing can be made from an injection molded metal alloy or plastic, and takes the form shown in FIG. 15B. The web 61 can be freed in accordance with FIG. 16A by two notches 59 and subsequently pressed into a profile by a crimping tool such as shown in FIG. 16C. The crimped portion functions as a protrusion to limit the movement of the pressing element 323.

The embodiment form of the wound metal sheet is in the form shown in FIGS. 17A, 17B, and 17C in which two pairs of pressing elements without intermediate expectation plates are maintained to move in a profile form providing sufficient space for the pressing elements. Can be extended. The two pairs of pressing elements may be separated from each other. According to FIG. 18, this separation can be done by an inverted convolution of the metal sheet material (see 331).

The embodiment form shown in FIG. 16C may further be injection molded from metal or plastic. One embodiment is shown in Figs. 19A and 19B, and Fig. 20 shows a corresponding technique for dual channel profiles. Due to the flexibility of the shoulder portion 342 according to FIG. 16C, indicated at 442 in FIGS. 19A and 19B, which shows an injection molded or plastic version, and 545 in FIG. 20, the shoulder portion protrudes out Each pair of pressing elements 323, 323, and 422 can be inserted and the shoulder portion is flexible upon insertion to move and bounce into the recess area. Therefore, the separation plug member of the form described with reference to the preceding embodiments can be omitted.

The structure shown in FIGS. 21A, 21B and 21C is similar to the structure shown in FIGS. 19A and 19B but two pairs of press plates 622 are provided instead of a pair of press plates 422 according to FIG. 19C. . In this case, the head member 620 is connected to the base member 618 by two screws 40, and the screw 20 is assembled into the shoulder portion 41 protruding from the base member 618. do. Headless screws, each of which extends into the travel path of the two pressing elements 622, are designated by reference numeral 44 to limit the travel path. In the arrangement according to FIGS. 22A, 22B and 22C, the pressing element 722 extends parallel to the plane of the thin wall and has an opening 46 into which the spiral spring 728 can be inserted. The spring is supported at the bottom surface 48 of the pocket hole 50 which receives the spring, which spring is pressed against the edge 52 of the pressing element 722 with the other end, and thus the thin wall 714. The pressing element 722 is pressed against the edge of the opening in. The retaining element 722 formed by the flat disk as shown in FIG. 22C is disposed in the corresponding shaped slotted space 54 disposed in the head member 720. Slotted space 54 extends sufficiently into head member 720 (see FIG. 22A) such that pressing element 722 can be inserted as a whole. Since the edge 56 abuts against the end of the spring 728 and the spring reduces the pressing action on the metal piece 722, the pressing element 722 is connected to the spring 728 with the back edge of the opening 46. When the bottom surface 48 is reached, outward movement is limited.

24A, 24B and 24C show the difference between the contact surface 360 and the inclined surface 624 which can accommodate the thickness of the additional thin walls 816, 817 compared to the configuration according to FIGS. 6A-6C. (B) is there. The embodiments according to FIGS. 24a to 24c thus have a narrow but conversely wide pressing element 822, in which a semicircular recess 64 is provided on the side to receive a cross section or half of the spring 828. Different from the embodiment according to Figs. 22A to 22C. The second half of the sun spring 828 is received by a corresponding space having a semicircular cross section, formed in the head member 28, and corresponds to the slot member 54 according to FIG. 22A.

25A, 25B and 25C allow the retaining element 922 to be blocked in the extended position, as shown in FIG. 25A by the plug 66 on the one hand, and on the other hand by the key 68. 66 removes the retaining element 922 against the force of the spring 988 after removal, thereby allowing the connection element to be released from the thin wall 914 whenever desired. Another advantage of this embodiment form is that the pressure of the spring 928 is such that friction occurs in the channel, and possibly the retaining element 922 is sufficiently secured such that the retaining plug 66 shown in FIG. 25A is no longer needed. Holding elements 922 in FIGS. 26A and 26B and in FIGS. 27A, 27B and 27C to force the holding element 922 outward in the direction of the channel wall 72. See also detail). If the plug 66 is not needed to secure the retaining element 922, the unlock key 68 passes through the hole 74 of the channel cover 76 and is formed by the two retaining elements 922. When introduced into the recess zone 78, the plug 66 also need not be removed. Referring to FIG. 25A, when the key 68 is rotated counterclockwise, the side side 80 of the key is pressed against the cross section 82 of the recess zone 78, and the key is in the position shown in FIG. 27C. The retaining element 922 is moved into the channel until is reached, where the key rotates by 90 ° and holds itself. The overall device shown in FIG. 25A can be pulled out of the opening in the thin wall 914 so that structural element members that can be fastened together if possible can be separated again.

In addition, the receiving space 84 for the spring 928 is clearly shown in FIGS. 26A-27C.

28A-D show two projections positioned opposite to each other and leaning against a spring 1028 while supporting two projections to form a processing device comprising a retaining element and a spring similar to the example of FIGS. 14A-14D. The figure shows a flat metal piece as a retaining element 102 having an opening 1046 for receiving a protrusion and a spring 1028.

Such a device may be received in a correspondingly shaped slot space 1054 in the head member 1020 (see FIG. 28A), and the spring 1028 when the retaining element 1022 is pressed into the position shown in FIG. 28A. The cutout 1084 provided for the spring is shorter than the corresponding cutout 1054 for the retaining element 1022 so that the contact surface is provided.

When the hump 86 is disposed at the end of the cutout 1084 relative to the spring, the spring is fixed and the retaining element 1022 with the spring 1028 can be prevented from disengaging.

In the embodiment form according to FIGS. 30A, 30B, 31, 32A and 32B, the channel 1134 opens upwards for technical reasons related to manufacturing (see FIG. 31). Since the retaining element 1122 is configured to be L-shaped in cross section, the retaining element 1122 is still such that one T is formed by two L-shaped elements placed next to each other as can be seen in FIG. 30B. You are guided. In this embodiment, the retaining element 1122 is not fixed, so that when the straight edge 88 is provided in front of the trial run slope 90, the connecting member 1110 into the opening 1112 of the thin wall 1116. Insertion becomes easy. The inclined surface formed by the body portion 1120 (see FIGS. 30B and 31) also facilitates the insertion of the thin wall 1116 into the rectangular opening 1112.

Even if the clip element is similarly open upwards, a single T-shaped clip element may further be inserted into the pocket hole with the T-shaped cross section, for example in front of the closure housing.

The shape of the opening need not be rectangular, as in the embodiment embodiment shown above, and may be circular if the provided rotation is not annoying or such rotation is desired, or two openings or rotations may be employed. It can be blocked or cross-shaped and can have four retaining elements each offset by 90 °, which is particularly reliable in addition to providing good holding force, or elliptical shape, and various other suitable appearance shapes that can be applied to the head member. To prevent rotation.

Practical embodiments of the embodiment shapes shown in FIGS. 25A, 25B-27C are shown in FIGS. 34-37. In such a case, the thin wall 1214 is retained in the wall support 1216, the wall 1214, and the carrier 1216, each having openings 1212 and 1213, and snapping through the openings. Element 1210 may be inserted and locked behind the carrier as shown in FIG. 34A. The snap fastening member 1210 is provided at the rear for unlocking such that the corresponding key 68 is inserted from the front as well as from the back to unlock the fastening element again and separate the thin wall 1214 from the wall support 1216. In addition, the front end is provided with a hole 1217.

Such unlocking from the front and back is illustrated in FIGS. 36 and 37, respectively.

For visual reasons, and also to prevent the ingress of dust, the holes 1274 may be closed by a plug 66 that may simultaneously operate to lock the retaining element 1122 to prevent unwanted removal.

Another embodiment is shown in FIGS. 39-44. FIG. 38 is a diagram showing rectangular openings 1313 in thin wall 1314 and openings 1312 in thin wall 1316. Opening 1413 and opening 1412 have two parallel edges and a circular edge perpendicular to the circular edge (see FIGS. 38A and 38B). All openings form notches in parallel walls located opposite each other.

The housing 1335 may be secured to the opening 1312 of the thin wall 1314. The clip process is realized by projections 1337 that protrude from the plastic housing but are flexible to the extent that they can be bent when inserting the edges of the perforations 1312. The housing is secured inside the thin wall 1314 in this manner. When the handle 43, which protrudes inwardly and is supported through the flange device 1318, is rotated a quarter turn, the housing 1335 is in the channel or guide device 1333 for the plate, or in FIGS. 25A-27C. Forming a pressing element that can be pulled back in a manner similar to that shown, retaining element 1322 is pulled back until the opening of the wall support 1318 is released, and the recess of the opening 1312 is a projection that is not pulled back. Let (1337) pass. The process is illustrated in FIG. 40D. Drying may be performed according to the embodiment shown above in such a way that the triggering device is locked at 90 ° so that a number of snap fastening devices 1310 of the kind described above can be locked simultaneously and pulled out of the wall support 1316. Can be.

One embodiment in which two snap fasteners 1310 of the kind described above are arranged in a thin wall 1314, for example a closure device of a wall element or wall support 1316, for example a frame of a housing, is shown in FIG. 44. In addition to that. The flange 1318 of the snap fastening device may further include a handle (see FIGS. 43B and 43A) that may surround the actuation screw 43.

In the embodiment shown in FIGS. 45A, 45B, and 45C, the snap fastener 1523 and the self-locking snap fastener 1522 that are not self-locking are located in the housing 1535. The self-locking snap fastener 1522 secures the device to the wall support 1415, and the non-self-locking snap fastener 1523 can detachably hold the thin wall 1516 at the wall support 1415. have.

FIG. 46 shows that the two types of snap fasteners 1522, 1523 can be biased relative to one another with respect to the distance from the plane of the thin wall 1540. The snap fastening device shown in FIG. 47 belongs to the device shown in FIG. 45B. The opening provided in the snap fastening device that is not self-locking is indicated at 1512 and is slightly larger than the opening required for the self locking snap fastening device and shown closer to 1513.

Various designs as detailed above can be used as the plate element.

48A and 48B show a self-locking version. 48C is a diagram showing the corresponding version rather than the automatic locking.

49A, 49B, and 49C illustrate one embodiment of a plate such as shown in a similar form to FIGS. 30-32.

50A and 50B show two views of a snap fastener with a plate that is not self-locking. The base member can be screwed in an adjustable manner as a bracket. This adjustability allows the door to hang.

51A-53, the snap fastening device 1710 according to the present invention serves as a connector for two thin walls 1714, 1716, such as sheet metal, in which openings 1712, 1713 are provided at connection points. do. Connectors are very difficult for many metals, such as stainless steel, and serve as substitutes for discolored welded connections, or as replacements for complex screw connections or rivets that, when disconnected, can cause short circuits in switch cabinets. If a connection is to be made, the snap connection according to the invention can further be used for connection points that are difficult to access.

The solution is that the base member 1718 and the head member 1720 are disposed on both members 1718, 1720 in a substantially mirror reversal manner with respect to the centerline of the housing, and both members are automatically in the insertion direction with respect to the spring force 1728. It is a lock and has a shared housing 1735 having retaining elements 1722, 1722 ′ shaped in such a manner as to be engaged with the edges of the opening by inclined surfaces 1724, 1724 ′, one wall 1716. The support edge 1718 covering the contact edge of the opening 1712 at) and accommodated by the opening 1713 at the second wall 1714 (see FIGS. 51A-53) is substantially in the insertion direction. It extends along the outer wall of the housing 1735 at the height of the inclined surface 1724 of the parallel head member 1720 holding element.

To this extent, the device is similar to the device in FIG. 2 except that only the base member 22 has the self-locking element 22 but the head element 20 does not have the self-locking element 22. . In the apparatus according to FIG. 51A, the inclination of the inclined surface 1724 becomes larger and eventually becomes self-locking.

Also in this case, the opening does not necessarily need to be rectangular, and other forms such as circular shapes may be added. The housing then takes on the outer contour applied accordingly.

Instead of using plug 1766 to limit the path of the retaining element, cross-pins may also be provided that extend through the recesses 1779 and are retained in vertical walls, not shown.

It is also possible for the retaining element to be provided with a projection which extends into a recess or elongated hole formed by the housing, taking into account kinematic reversal and limiting the path of travel of the retaining element.

Instead of using a holding element that can move in a straight line, in many cases a turning movement can also be used additionally. For example, FIG. 54 shows a constant distance A from the thin wall 1816 so that the retaining element 1822 can rotate about an axis parallel to the plane of the thin wall 1816 (see FIG. 54). It is a figure which shows the snap fastening device characterized by being a lever.

Optionally, the snap fastener is further characterized as a lever disposed at a distance from the thin wall 1916 such that the retaining element 1822 can rotate about an axis perpendicular to the plane of the thin wall 1916. This can be done (see Figs. 55A to 55C).

FIG. 56 is an exploded view of the snap fastening device 2010 similar to the snap fastening device of FIGS. 40A-40C but provided with a spring 2037 that can be inserted into the housing slot 67 instead of the fastening cam. The snap fastening device 2010 is fastened to the opening 2012 of the wall support 2016 by such a spring member 2037 inserted on the opposite side of the head member 2020. This aspect is illustrated in FIGS. 60A-60C.

A thin wall 2014 with a rather large opening 2013 that allows the spring 2037 to pass freely is continuously attached and held by the pressing element 2022 as shown in FIGS. 61A-61C.

57A-57F (FIG. 57E is an enlarged view) are various views illustrating the snap fastening device according to FIG. 56 in a closed position with the pressing element 2022 moved out. The wing 2029 of the rotatable handle 2043 is the stop face 69 of the housing in such a way that the push element 2022 is pulled back when the rotatable handle 2043 rotates 90 ° so that the open position shown in FIG. 58E is reached. And extend into the notch 2078 of the pressing element 2022 (until contact with the second stop face 71).

58a-58e are various views illustrating the snap fastening device according to FIG. 56 in the open position. FIG. 59 is a perspective view of the snap fastener according to FIG. 56 before the snap fastener is mounted to the wall support and before the thin wall is mounted to the wall support by the snap fastener. 60a shows a perspective view of the snap fastener according to FIG. 56 after the snap fastener is mounted to the wall support and before the thin wall is mounted to the wall support by the snap fastener. 60B-60D are other views showing the aspect shown in FIG. 60A, and FIG. 61A is a view after the snap fastener is mounted to the wall support and after the thin wall is mounted to the wall support by the snap fastener. A perspective view of the snap fastening device according to 56. 61B-61D are other views illustrating the aspect shown in FIG. 61A.

The rotary handle 2043 has a flange 73 with color marks 75, 77, for example red and green dots. The flange is rotatably mounted between the cover 83 and the housing face 81, which can be secured to the cover 83. The housing in that the notch or opening 85 is arranged in such a way that the colored spot or surface area is visible (see eg FIG. 60D) at a fixed position (eg at two end positions) of the rotary handle relative to the housing. (Or the cover 83 of the housing) has an indication in the form of a notch 85 indicating the operating position (open, closed) of the pressing element.

The present invention is commercially available for switch cabinet construction.

Claims (37)

Snap fastening device for fixing a thin wall 14 such as a housing wall, a door leaf, a shutter, etc., in which an opening 13 is also provided, to a wall support such as a housing frame, a door frame, a wall opening edge, etc., provided with the opening 13. (10, 110, 210, 310, 410, 510, 610, 710, 810, 910, 1010, 1110, 1210, 1310, 1410, 1510, 1610, 1710, 1810, 1910, wherein the wall support is an opening 13 ) Having a base member 18 that can be disposed on the wall support 16 at which the wall support extends away from the base member 18 and once increased and then increases the head member in the direction of the base member 18. A head member 20 having a diameter 49 which decreases back from the end of 20 to the longitudinal section, which head member 20 acts in a radially outward direction in the direction of the diameter 49. By overcoming the undercut arm formed or maintained by the opening 13 in the thin wall 14 In the snap fastener which becomes a male plug-in part that can be accommodated by a female plug-in part 13, Guide device for one or more pressing or retaining elements 22, 23 pressed by at least one spring 28 to a point where the head member 20 protrudes beyond the ends of the guide device or channels 33, 34, or The channels 33, 34, the ends 51, 53 of the pressing element or the retaining elements 22, 23 protruding from the guiding device or channel are triangular or ball-shaped in a protruding plane extending perpendicular to the thin wall 14. (See FIGS. 7B, 8, 9, and 6). The method of claim 1, Snap fastening device characterized in that the female plug-in member 13 is preferably formed by a triangular opening in the substantially thin wall 14, preferably in an inclined region at the edge of the thin wall 14. . The method according to claim 1 or 2, The pressing elements 23 comprise two plates next to each other or one behind the other so that they can move, each of which extends in the direction of movement, individually or in combination with a helical pressure spring. A snap fastening device, characterized in that it comprises an opening (47) defining a receiving space for the (28). The method of claim 3, With respect to the common receiving space for the spring 48, the opening 47 is ball or triangular free in such a way that the shared spring 28 forces the two plates 23 in the direction of movement 49. Snap fastening device, characterized in that arranged to move away from the end. The method according to claim 3 or 4, The edges of the openings 46, 47, 146 are snap-in, characterized in that they have projections (for example 186) or recesses for fixing the spring 28 and the plates 22, 23, 122. Fastening device. The method according to claim 4 or 5, The two plates 22, 23, 122 are notched 79 at the outer longitudinal edges so that longitudinal movement is limited by shoulders, protrusions, plugs, or pins 66 projecting into the notches 79. Snap fastening device comprising a. The method according to claim 4, 5 or 6, The two plates 123 are vertical in the U-shaped housing 35 in which the leg ends are fastened to the base plates 118 and 218 formed by the base members 18 or integrally formed with the base plates 118 and 218. A snap fastening device, characterized in that guided to move in the direction. The method of claim 7, wherein A snap fastening device characterized in that the U-shaped housing (35) has an opening in a web region for receiving a pin (66) or a plug (66). The method according to any one of claims 1 to 8, Snap fastening device characterized in that the base member (218) comprises a screw bolt (219). The method according to any one of claims 1 to 8, A snap fastening device, characterized in that the base member is formed by a fastening plate 118 provided with a fastening hole. The method according to any one of claims 1 to 8, A snap fastener, characterized in that the base member 118 is formed by a plate 118 overlapping the longitudinal edge of the opening 13 in the thin wall 14. The method of claim 11, A snap fastener, wherein the base member 318 is one side of a pressed metal profile, such as an aluminum profile (see FIG. 15B). The method of claim 11, A snap fastening device characterized in that the base member 318 'is one side of a wound metal sheet profile, such as a sheet steel profile (see FIG. 16B). The method of claim 11, A snap fastening device characterized in that the base member 418 is one side of the injection molded plastic profile (see FIGS. 19A and 19B). The method of claim 11, Snap, characterized in that the base member 322 takes on substantially the same structure, in particular the mirror reversal structure of the head member (see FIG. 12; 323, 17A, 17B, 17C, 18, and 20). Type fastening device. The method of claim 15, The two members (22, 23) are provided with a shared base plate (18, 118) sandwiched between the two members. The method of claim 16, The base plate 18 of the head member 320 is formed or held by the web of the base member 319 (see FIGS. 11B and 11C). The method of claim 16, A snap fastening device characterized in that the base member (319) has a longitudinally extending member larger than the head member (320), and together with the web forms a support shoulder portion (57) for the thin wall (14). The method according to claim 16, 17 or 18, The free end 51 of the plate 22 of the base member 19 moves the plate 22 which can move in the longitudinal direction when the base member guides the member 26 of the roof shape 26 having a flatter slope. It can be inserted into a suitable opening 12 of a thin wall or wall support 16 by insertion, but when it is impossible to guide the inclined member 24 of the roof because the plate 22 is automatically locked in the guide device 19. Snap fastening device, characterized in that it takes a symmetrical roof shape (26, 24) to move backwards. The method according to any one of claims 1 to 19, When a self-locking snap fastener is used, a tool, such as a key 68, which can pull back the pressing element against spring forces by rotating it, has a self-locking snap fastening device (Figs. 25A-27C; Fig. 36 and Fig. Snap fastening device which can be inserted from the front and / or the back into a housing (935). The method according to any one of claims 1 to 20, The housing 1335 may be provided with a fastening cam 37, which may be secured into the through opening 1313 of the thin wall 1314, and with an operating wheel or rotary knob that may pull back the pressing element 1322 in the housing. 43) or a snap fastening device characterized in that the key protrudes from the housing 1335. The method of claim 21, Snap fastening device, characterized in that the operating wheel 46 is locked in the open position. The method according to any one of claims 7 to 22, Snap fastening device, characterized in that the handle device (45) protrudes from the housing (1335). The method according to any one of claims 19 to 23, Snap fastening, characterized in that the housing also includes a snap fastening device 1523 that is not self-locking, as well as a snap fastening device 1522 that is self-locking (FIGS. 45A, 45B, and 45C; see FIG. 46). Device. The method of claim 24, The two forms 1522, 1523 of the snap fastener are arranged in the housing so that they can be biased with respect to each other with respect to the distance from the plane of the thin wall 1514 (see FIG. 46). Device. The method of claim 10, A snap fastening device characterized in that the base member 1618 has a long hole as a fastening hole. A rack or drawer with a face plate with a thin wall, characterized in that the front plate and drawer receptacle of the thin wall (1314) are the wall supports according to any one of claims 1 to 19. 27. A cabinet with a thin wall or door leaf, characterized by one snap fastening device or a plurality of snap fastening devices according to any one of claims 1 to 26. The method of claim 28, One or more handles or recessed handles 115 are arranged in the opening of the thin wall where a snap fastener, similar to the snap fastener of the base member according to any one of claims 1 to 26, is engaged. A cabinet with a thin wall or door leaf. The method of claim 29, A thin wall 114 is provided with a web 17 having an opening for receiving a symmetrical roofed end 53 of the snap fastening device (not self-locking) according to any one of claims 1 to 26. Cabinet with a thin wall or door leaf, characterized in that. 20. In the snap fastening device according to any one of claims 1 to 19, as connector for two thin walls 1714, 1716, such as metal sheets, in which openings 1712, 1713 are provided at the connection points. The base member 1718 and the head member 1720 are disposed on both members 1718 and 1720 in a substantially mirror reversal manner with respect to the centerline of the housing, and both members are automatically locked in the insertion direction with respect to the spring force 1728. And a shared housing 1735 having retaining elements 1722, 1722 ′ shaped in such a manner as to be engaged with the edges of the openings by inclined surfaces 1724, 1724 ′, the openings in one wall 1716. The support edge 1718 covering the contact edge of 1712 and accommodated by the opening 1713 in the second wall 1714 (see FIGS. 51A-53) is a head member (substantially parallel to the insertion direction). 1720 A snap fastening device characterized in that extends along an outer wall of a housing 1735 at the height of an inclined surface 1724 of a retaining element. The method of claim 1, The retaining element 1822 is a lever disposed at a distance A from the thin wall 1816 so that it can rotate about an axis parallel to the plane of the thin wall 1816 (see FIG. 54). Snap fasteners. The method of claim 1, Snap fastening device characterized in that the retaining element 1922 is a lever disposed at a distance from the thin wall 1916 such that it can rotate about an axis perpendicular to the plane of the thin wall 1916 (FIGS. 55A-55). 55C). The method of claim 21, 22, or 23, Snap fastening device, characterized in that the fastening cam can be replaced by a spring (2037) that can be inserted into the housing (2018, 2020). The method according to claim 21, 22, 23, or 24, The rotary handle (2043) and / or the housing (2018, 83) is provided with indications (75, 77, 85) indicating the operating position (open, closed) of the pressing element (2022). 36. The method of claim 35 wherein Indications on the housing (on the rotatable handle) are color points or surface zones 75 and 77, and marks on the rotatable handle (in the housing) are at a fixed position (eg at two end positions) of the rotatable handle relative to the housing. ) Snap fasteners, characterized in that they are arranged in such a way that the colored spots or surface areas are visible. The method of claim 36, The rotary handle 2043 forms a flange 73 with color markings 75, 77, and the flange 80 or the base member of the housing forms a notch or opening 85. Device.

Images